| /* |
| Copyright (C) <2010> <Roderick W. Smith> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License along |
| with this program; if not, write to the Free Software Foundation, Inc., |
| 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| |
| */ |
| |
| /* This class implements an interactive text-mode interface atop the |
| GPTData class */ |
| |
| #include <string.h> |
| #include <errno.h> |
| #include <stdint.h> |
| #include <limits.h> |
| #include <iostream> |
| #include <sstream> |
| #include <cstdio> |
| #include "attributes.h" |
| #include "gpttext.h" |
| #include "partnotes.h" |
| #include "support.h" |
| |
| using namespace std; |
| |
| /******************************************* |
| * * |
| * GPTDataText class and related structures * |
| * * |
| ********************************************/ |
| |
| GPTDataTextUI::GPTDataTextUI(void) : GPTData() { |
| } // default constructor |
| |
| GPTDataTextUI::GPTDataTextUI(string filename) : GPTData(filename) { |
| } // constructor passing filename |
| |
| GPTDataTextUI::~GPTDataTextUI(void) { |
| } // default destructor |
| |
| /********************************************************************* |
| * * |
| * The following functions are extended (interactive) versions of * |
| * simpler functions in the base class.... * |
| * * |
| *********************************************************************/ |
| |
| // Overridden function; calls base-class function and then makes |
| // additional queries of the user, if the base-class function can't |
| // decide what to do. |
| WhichToUse GPTDataTextUI::UseWhichPartitions(void) { |
| WhichToUse which; |
| MBRValidity mbrState; |
| int answer; |
| |
| which = GPTData::UseWhichPartitions(); |
| if ((which != use_abort) || beQuiet) |
| return which; |
| |
| // If we get past here, it means that the non-interactive tests were |
| // inconclusive, so we must ask the user which table to use.... |
| mbrState = protectiveMBR.GetValidity(); |
| |
| if ((state == gpt_valid) && (mbrState == mbr)) { |
| cout << "Found valid MBR and GPT. Which do you want to use?\n"; |
| answer = GetNumber(1, 3, 2, " 1 - MBR\n 2 - GPT\n 3 - Create blank GPT\n\nYour answer: "); |
| if (answer == 1) { |
| which = use_mbr; |
| } else if (answer == 2) { |
| which = use_gpt; |
| cout << "Using GPT and creating fresh protective MBR.\n"; |
| } else which = use_new; |
| } // if |
| |
| // Nasty decisions here -- GPT is present, but corrupt (bad CRCs or other |
| // problems) |
| if (state == gpt_corrupt) { |
| if ((mbrState == mbr) || (mbrState == hybrid)) { |
| cout << "Found valid MBR and corrupt GPT. Which do you want to use? (Using the\n" |
| << "GPT MAY permit recovery of GPT data.)\n"; |
| answer = GetNumber(1, 3, 2, " 1 - MBR\n 2 - GPT\n 3 - Create blank GPT\n\nYour answer: "); |
| if (answer == 1) { |
| which = use_mbr; |
| } else if (answer == 2) { |
| which = use_gpt; |
| } else which = use_new; |
| } else if (mbrState == invalid) { |
| cout << "Found invalid MBR and corrupt GPT. What do you want to do? (Using the\n" |
| << "GPT MAY permit recovery of GPT data.)\n"; |
| answer = GetNumber(1, 2, 1, " 1 - Use current GPT\n 2 - Create blank GPT\n\nYour answer: "); |
| if (answer == 1) { |
| which = use_gpt; |
| } else which = use_new; |
| } // if/else/else |
| } // if (corrupt GPT) |
| |
| return which; |
| } // UseWhichPartitions() |
| |
| // Ask the user for a partition number; and prompt for verification |
| // if the requested partition isn't of a known BSD type. |
| // Lets the base-class function do the work, and returns its value (the |
| // number of converted partitions). |
| int GPTDataTextUI::XFormDisklabel(void) { |
| uint32_t partNum; |
| uint16_t hexCode; |
| int goOn = 1, numDone = 0; |
| BSDData disklabel; |
| |
| partNum = GetPartNum(); |
| |
| // Now see if the specified partition has a BSD type code.... |
| hexCode = partitions[partNum].GetHexType(); |
| if ((hexCode != 0xa500) && (hexCode != 0xa900)) { |
| cout << "Specified partition doesn't have a disklabel partition type " |
| << "code.\nContinue anyway? "; |
| goOn = (GetYN() == 'Y'); |
| } // if |
| |
| if (goOn) |
| numDone = GPTData::XFormDisklabel(partNum); |
| |
| return numDone; |
| } // GPTData::XFormDisklabel(int i) |
| |
| |
| /********************************************************************* |
| * * |
| * Begin functions that obtain information from the users, and often * |
| * do something with that information (call other functions) * |
| * * |
| *********************************************************************/ |
| |
| // Prompts user for partition number and returns the result. |
| uint32_t GPTDataTextUI::GetPartNum(void) { |
| uint32_t partNum; |
| uint32_t low, high; |
| ostringstream prompt; |
| |
| if (GetPartRange(&low, &high) > 0) { |
| prompt << "Partition number (" << low + 1 << "-" << high + 1 << "): "; |
| partNum = GetNumber(low + 1, high + 1, low, prompt.str()); |
| } else partNum = 1; |
| return (partNum - 1); |
| } // GPTDataTextUI::GetPartNum() |
| |
| // What it says: Resize the partition table. (Default is 128 entries.) |
| void GPTDataTextUI::ResizePartitionTable(void) { |
| int newSize; |
| ostringstream prompt; |
| uint32_t curLow, curHigh; |
| |
| cout << "Current partition table size is " << numParts << ".\n"; |
| GetPartRange(&curLow, &curHigh); |
| curHigh++; // since GetPartRange() returns numbers starting from 0... |
| // There's no point in having fewer than four partitions.... |
| if (curHigh < (blockSize / GPT_SIZE)) |
| curHigh = blockSize / GPT_SIZE; |
| prompt << "Enter new size (" << curHigh << " up, default " << NUM_GPT_ENTRIES << "): "; |
| newSize = GetNumber(4, 65535, 128, prompt.str()); |
| if (newSize < 128) { |
| cout << "Caution: The partition table size should officially be 16KB or larger,\n" |
| << "which works out to 128 entries. In practice, smaller tables seem to\n" |
| << "work with most OSes, but this practice is risky. I'm proceeding with\n" |
| << "the resize, but you may want to reconsider this action and undo it.\n\n"; |
| } // if |
| SetGPTSize(newSize); |
| } // GPTDataTextUI::ResizePartitionTable() |
| |
| // Interactively create a partition |
| void GPTDataTextUI::CreatePartition(void) { |
| uint64_t firstBlock, firstInLargest, lastBlock, sector, origSector; |
| uint32_t firstFreePart = 0; |
| ostringstream prompt1, prompt2, prompt3; |
| int partNum; |
| |
| // Find first free partition... |
| while (partitions[firstFreePart].GetFirstLBA() != 0) { |
| firstFreePart++; |
| } // while |
| |
| if (((firstBlock = FindFirstAvailable()) != 0) && |
| (firstFreePart < numParts)) { |
| lastBlock = FindLastAvailable(); |
| firstInLargest = FindFirstInLargest(); |
| |
| // Get partition number.... |
| do { |
| prompt1 << "Partition number (" << firstFreePart + 1 << "-" << numParts |
| << ", default " << firstFreePart + 1 << "): "; |
| partNum = GetNumber(firstFreePart + 1, numParts, |
| firstFreePart + 1, prompt1.str()) - 1; |
| if (partitions[partNum].GetFirstLBA() != 0) |
| cout << "partition " << partNum + 1 << " is in use.\n"; |
| } while (partitions[partNum].GetFirstLBA() != 0); |
| |
| // Get first block for new partition... |
| prompt2 << "First sector (" << firstBlock << "-" << lastBlock << ", default = " |
| << firstInLargest << ") or {+-}size{KMGTP}: "; |
| do { |
| sector = GetSectorNum(firstBlock, lastBlock, firstInLargest, blockSize, prompt2.str()); |
| } while (IsFree(sector) == 0); |
| origSector = sector; |
| if (Align(§or)) { |
| cout << "Information: Moved requested sector from " << origSector << " to " |
| << sector << " in\norder to align on " << sectorAlignment |
| << "-sector boundaries.\n"; |
| if (!beQuiet) |
| cout << "Use 'l' on the experts' menu to adjust alignment\n"; |
| } // if |
| // Align(§or); // Align sector to correct multiple |
| firstBlock = sector; |
| |
| // Get last block for new partitions... |
| lastBlock = FindLastInFree(firstBlock); |
| prompt3 << "Last sector (" << firstBlock << "-" << lastBlock << ", default = " |
| << lastBlock << ") or {+-}size{KMGTP}: "; |
| do { |
| sector = GetSectorNum(firstBlock, lastBlock, lastBlock, blockSize, prompt3.str()); |
| } while (IsFree(sector) == 0); |
| lastBlock = sector; |
| |
| firstFreePart = GPTData::CreatePartition(partNum, firstBlock, lastBlock); |
| partitions[partNum].ChangeType(); |
| partitions[partNum].SetDefaultDescription(); |
| } else { |
| cout << "No free sectors available\n"; |
| } // if/else |
| } // GPTDataTextUI::CreatePartition() |
| |
| // Interactively delete a partition (duh!) |
| void GPTDataTextUI::DeletePartition(void) { |
| int partNum; |
| uint32_t low, high; |
| ostringstream prompt; |
| |
| if (GetPartRange(&low, &high) > 0) { |
| prompt << "Partition number (" << low + 1 << "-" << high + 1 << "): "; |
| partNum = GetNumber(low + 1, high + 1, low, prompt.str()); |
| GPTData::DeletePartition(partNum - 1); |
| } else { |
| cout << "No partitions\n"; |
| } // if/else |
| } // GPTDataTextUI::DeletePartition() |
| |
| // Prompt user for a partition number, then change its type code |
| // using ChangeGPTType(struct GPTPartition*) function. |
| void GPTDataTextUI::ChangePartType(void) { |
| int partNum; |
| uint32_t low, high; |
| |
| if (GetPartRange(&low, &high) > 0) { |
| partNum = GetPartNum(); |
| partitions[partNum].ChangeType(); |
| } else { |
| cout << "No partitions\n"; |
| } // if/else |
| } // GPTDataTextUI::ChangePartType() |
| |
| // Partition attributes seem to be rarely used, but I want a way to |
| // adjust them for completeness.... |
| void GPTDataTextUI::SetAttributes(uint32_t partNum) { |
| // Attributes theAttr; |
| |
| partitions[partNum].SetAttributes(); |
| /* theAttr = partitions[partNum].GetAttributes(); |
| // theAttr.SetAttributes(partitions[partNum].GetAttributes()); |
| theAttr.ChangeAttributes(); |
| partitions[partNum].SetAttributes(theAttr.GetAttributes()); */ |
| } // GPTDataTextUI::SetAttributes() |
| |
| // Ask user for two partition numbers and swap them in the table. Note that |
| // this just reorders table entries; it doesn't adjust partition layout on |
| // the disk. |
| // Returns 1 if successful, 0 if not. (If user enters identical numbers, it |
| // counts as successful.) |
| int GPTDataTextUI::SwapPartitions(void) { |
| int partNum1, partNum2, didIt = 0; |
| uint32_t low, high; |
| ostringstream prompt; |
| GPTPart temp; |
| |
| if (GetPartRange(&low, &high) > 0) { |
| partNum1 = GetPartNum(); |
| if (high >= numParts - 1) |
| high = 0; |
| prompt << "New partition number (1-" << numParts |
| << ", default " << high + 2 << "): "; |
| partNum2 = GetNumber(1, numParts, high + 2, prompt.str()) - 1; |
| didIt = GPTData::SwapPartitions(partNum1, partNum2); |
| } else { |
| cout << "No partitions\n"; |
| } // if/else |
| return didIt; |
| } // GPTDataTextUI::SwapPartitionNumbers() |
| |
| // This function destroys the on-disk GPT structures. Returns 1 if the user |
| // confirms destruction, 0 if the user aborts or if there's a disk error. |
| int GPTDataTextUI::DestroyGPTwPrompt(void) { |
| int allOK = 1; |
| |
| if ((apmFound) || (bsdFound)) { |
| cout << "WARNING: APM or BSD disklabel structures detected! This operation could\n" |
| << "damage any APM or BSD partitions on this disk!\n"; |
| } // if APM or BSD |
| cout << "\a\aAbout to wipe out GPT on " << device << ". Proceed? "; |
| if (GetYN() == 'Y') { |
| if (DestroyGPT()) { |
| // Note on below: Touch the MBR only if the user wants it completely |
| // blanked out. Version 0.4.2 deleted the 0xEE partition and re-wrote |
| // the MBR, but this could wipe out a valid MBR that the program |
| // had subsequently discarded (say, if it conflicted with older GPT |
| // structures). |
| cout << "Blank out MBR? "; |
| if (GetYN() == 'Y') { |
| DestroyMBR(); |
| } else { |
| cout << "MBR is unchanged. You may need to delete an EFI GPT (0xEE) partition\n" |
| << "with fdisk or another tool.\n"; |
| } // if/else |
| } else allOK = 0; // if GPT structures destroyed |
| } else allOK = 0; // if user confirms destruction |
| return (allOK); |
| } // GPTDataTextUI::DestroyGPTwPrompt() |
| |
| // Get partition number from user and then call ShowPartDetails(partNum) |
| // to show its detailed information |
| void GPTDataTextUI::ShowDetails(void) { |
| int partNum; |
| uint32_t low, high; |
| |
| if (GetPartRange(&low, &high) > 0) { |
| partNum = GetPartNum(); |
| ShowPartDetails(partNum); |
| } else { |
| cout << "No partitions\n"; |
| } // if/else |
| } // GPTDataTextUI::ShowDetails() |
| |
| // Create a hybrid MBR -- an ugly, funky thing that helps GPT work with |
| // OSes that don't understand GPT. |
| void GPTDataTextUI::MakeHybrid(void) { |
| uint32_t partNums[3]; |
| char line[255]; |
| char* junk; |
| int numPartsToCvt, i, j, mbrNum, bootable = 0; |
| unsigned int hexCode = 0; |
| struct PartInfo *newNote; |
| PartNotes notes; |
| char eeFirst = 'Y'; // Whether EFI GPT (0xEE) partition comes first in table |
| |
| cout << "\nWARNING! Hybrid MBRs are flaky and potentially dangerous! If you decide not\n" |
| << "to use one, just hit the Enter key at the below prompt and your MBR\n" |
| << "partition table will be untouched.\n\n\a"; |
| |
| // Now get the numbers of up to three partitions to add to the |
| // hybrid MBR.... |
| cout << "Type from one to three GPT partition numbers, separated by spaces, to be\n" |
| << "added to the hybrid MBR, in sequence: "; |
| junk = fgets(line, 255, stdin); |
| numPartsToCvt = sscanf(line, "%d %d %d", &partNums[0], &partNums[1], &partNums[2]); |
| |
| if (numPartsToCvt > 0) { |
| cout << "Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? "; |
| eeFirst = GetYN(); |
| } // if |
| |
| for (i = 0; i < numPartsToCvt; i++) { |
| newNote = new struct PartInfo; |
| j = newNote->gptPartNum = partNums[i] - 1; |
| mbrNum = i + (eeFirst == 'Y'); |
| cout << "\nCreating entry for GPT partition #" << j + 1 |
| << " (MBR partition #" << mbrNum + 1 << ")\n"; |
| newNote->hexCode = GetMBRTypeCode(partitions[j].GetHexType() / 256); |
| newNote->firstLBA = partitions[j].GetFirstLBA(); |
| newNote->lastLBA = partitions[j].GetLastLBA(); |
| newNote->type = PRIMARY; |
| cout << "Set the bootable flag? "; |
| if (GetYN() == 'Y') |
| newNote->active = 1; |
| else |
| newNote->active = 0; |
| notes.AddToEnd(newNote); |
| } // for |
| |
| if (numPartsToCvt > 0) { // User opted to create a hybrid MBR.... |
| // Create EFI protective partition that covers the start of the disk. |
| // If this location (covering the main GPT data structures) is omitted, |
| // Linux won't find any partitions on the disk. |
| newNote = new struct PartInfo; |
| newNote->gptPartNum = MBR_EFI_GPT; |
| newNote->firstLBA = 1; |
| newNote->active = 0; |
| newNote->hexCode = 0xEE; |
| newNote->type = PRIMARY; |
| // newNote firstLBA and lastLBA are computed later... |
| if (eeFirst == 'Y') { |
| notes.AddToStart(newNote); |
| } else { |
| notes.AddToEnd(newNote); |
| } // else |
| protectiveMBR.SetHybrid(); |
| |
| // ... and for good measure, if there are any partition spaces left, |
| // optionally create another protective EFI partition to cover as much |
| // space as possible.... |
| if (notes.GetNumPrimary() < 4) { // unused entry.... |
| cout << "\nUnused partition space(s) found. Use one to protect more partitions? "; |
| if (GetYN() == 'Y') { |
| while ((hexCode <= 0) || (hexCode > 255)) { |
| cout << "Enter an MBR hex code (EE is EFI GPT, but may confuse MacOS): "; |
| // Comment on above: Mac OS treats disks with more than one |
| // 0xEE MBR partition as MBR disks, not as GPT disks. |
| junk = fgets(line, 255, stdin); |
| sscanf(line, "%x", &hexCode); |
| if (line[0] == '\n') |
| hexCode = 0x00; |
| } // while |
| newNote = new struct PartInfo; |
| newNote->gptPartNum = MBR_EFI_GPT; |
| newNote->active = 0; |
| newNote->hexCode = hexCode; |
| newNote->type = PRIMARY; |
| // newNote firstLBA and lastLBA are computed later... |
| notes.AddToEnd(newNote); |
| } // if (GetYN() == 'Y') |
| } // if unused entry |
| PartsToMBR(notes); |
| if (bootable > 0) |
| protectiveMBR.SetPartBootable(bootable); |
| } // if (numPartsToCvt > 0) |
| } // GPTDataTextUI::MakeHybrid() |
| |
| // Assign GPT partitions to primary or logical status for conversion. The |
| // function first presents a suggested layout with as many logicals as |
| // possible, but gives the user the option to override this suggestion. |
| // Returns the number of partitions assigned (0 if problems or if the |
| // user aborts) |
| int GPTDataTextUI::AssignPrimaryOrLogical(PartNotes & notes) { |
| int i, partNum, allOK = 1, changesWanted = 1, countedParts, numPrimary = 0, numLogical = 0; |
| int newNumParts; // size of GPT table |
| |
| // Sort and resize the GPT table. Resized to clear the sector before the |
| // first available sector, if possible, so as to enable turning the |
| // first partition into a logical, should that be desirable/necessary. |
| SortGPT(); |
| countedParts = newNumParts = CountParts(); |
| i = blockSize / GPT_SIZE; |
| if ((newNumParts % i) != 0) { |
| newNumParts = ((newNumParts / i) + 1) * i; |
| } // if |
| SetGPTSize(newNumParts); |
| |
| // Takes notes on existing partitions: Create an initial assignment as |
| // primary or logical, set default MBR types, and then make it legal |
| // (drop partitions as required to fit in the MBR and as logicals). |
| allOK = (notes.PassPartitions(partitions, this, numParts, blockSize) == (int) numParts); |
| for (i = 0; i < countedParts; i++) |
| notes.SetMbrHexType(i, partitions[i].GetHexType() / 255); |
| notes.MakeItLegal(); |
| |
| while (allOK && changesWanted) { |
| notes.ShowSummary(); |
| cout << "\n"; |
| partNum = GetNumber(-1, countedParts, -2, |
| "Type partition to change, 0 to accept, -1 to abort: "); |
| switch (partNum) { |
| case -1: |
| allOK = 0; |
| break; |
| case 0: |
| changesWanted = 0; |
| break; |
| default: |
| allOK = notes.MakeChange(partNum - 1); |
| break; |
| } // switch |
| } // while |
| |
| i = 0; |
| if (allOK) |
| for (i = 0; i < countedParts; i++) { |
| switch (notes.GetType(i)) { |
| case PRIMARY: |
| numPrimary++; |
| break; |
| case LOGICAL: |
| numLogical++; |
| break; |
| } // switch |
| if (notes.GetActiveStatus(i)) |
| protectiveMBR.SetPartBootable(i); |
| } // for |
| |
| if (numPrimary > 4) { |
| cerr << "Warning! More than four primary partitions in " |
| << "GPTDataTextUI::AssignPrimaryOrLogical()!\n"; |
| allOK = 0; |
| } // if |
| return (allOK * (numPrimary + numLogical)); |
| } // GPTDataTextUI::AssignPrimaryOrLogical() |
| |
| // Convert the GPT to MBR form, storing partitions in the protectiveMBR |
| // variable. This function is necessarily limited; it may not be able to |
| // convert all partitions, depending on the disk size and available space |
| // before each partition (one free sector is required to create a logical |
| // partition, which are necessary to convert more than four partitions). |
| // Returns the number of converted partitions; if this value |
| // is over 0, the calling function should call DestroyGPT() to destroy |
| // the GPT data, call SaveMBR() to save the MBR, and then exit. |
| int GPTDataTextUI::XFormToMBR(void) { |
| int numToConvert, numReallyConverted = 0; |
| int origNumParts; |
| PartNotes notes; |
| GPTPart *tempGptParts; |
| uint32_t i; |
| |
| // Back up partition array, since we'll be sorting it and we want to |
| // be able to restore it in case the user aborts.... |
| origNumParts = numParts; |
| tempGptParts = new GPTPart[numParts]; |
| for (i = 0; i < numParts; i++) |
| tempGptParts[i] = partitions[i]; |
| |
| numToConvert = AssignPrimaryOrLogical(notes); |
| |
| if (numToConvert > 0) { |
| numReallyConverted = PartsToMBR(notes); |
| if (numReallyConverted != numToConvert) { |
| cerr << "Error converting partitions to MBR; tried to convert " |
| << numToConvert << " partitions,\nbut converted " << numReallyConverted |
| << ". Aborting operation!\n"; |
| numReallyConverted = 0; |
| protectiveMBR.MakeProtectiveMBR(); |
| } // if/else |
| } // if |
| |
| // A problem or the user aborted; restore backup of unsorted and |
| // original-sized partition table and delete the sorted and |
| // resized one; otherwise free the backup table's memory.... |
| if (numReallyConverted == 0) { |
| delete[] partitions; |
| partitions = tempGptParts; |
| SetGPTSize(origNumParts); |
| } else { |
| delete[] tempGptParts; |
| } // if |
| return numReallyConverted; |
| } // GPTDataTextUI::XFormToMBR() |
| |
| /********************************************************************* |
| * * |
| * The following doesn't really belong in the class, since it's MBR- * |
| * specific, but it's also user I/O-related, so I want to keep it in * |
| * this file.... * |
| * * |
| *********************************************************************/ |
| |
| // Get an MBR type code from the user and return it |
| int GetMBRTypeCode(int defType) { |
| char line[255]; |
| char* junk; |
| int typeCode; |
| |
| cout.setf(ios::uppercase); |
| cout.fill('0'); |
| do { |
| cout << "Enter an MBR hex code (default " << hex; |
| cout.width(2); |
| cout << defType << "): " << dec; |
| junk = fgets(line, 255, stdin); |
| if (line[0] == '\n') |
| typeCode = defType; |
| else |
| sscanf(line, "%x", &typeCode); |
| } while ((typeCode <= 0) || (typeCode > 255)); |
| cout.fill(' '); |
| return typeCode; |
| } // GetMBRTypeCode |